Glass-molding apparatus



Nov. 3, 1925; 1,559,854

' A. N. CRAMER GLASS MOLDING APPARATUS Filed Dec. 16, 1920 2 Sheets-Sheet l,

TI 4 INVENTOR NQV. 3, 1925. 1,559,854

A. N. CRAMER GLASS MOLDING APPARATUS Filed Dec. 16, 1920 2 ShJeets-Sheec 2 iNVENTOR JZ .71. Cramer Fatented lilovi 3, 1925.

warren s'ra'res PATENT orrlcs.

ALBERT N. (IR-AMER, 0F TOLEDO, OHIO, ASSIGNOB TO THE OWENS BOTTLE COMPANY,

OF TOLEDO, OHIO, A CORPGRATION OF OHIO. I

To all whom it GLASS-MOLDING APPARATUS.

Application filed December 16, 1920. Serial No. 431.070.

lie it known thatl. Arnnirr N. (nun-1n. a

citizen of the United States. residing at 'lolcdo, in the county of Lucas and State of Ohio, have invented new and useful linprovcmcnts in Glass-Molding Apparatus, of which the following is a specification.

My invention relates particularly to blank molds for receiving charges. of molten glass, and means for forming a temporary closure for the charge receiving end of the mold after the charge has been'introduced. The invention is herein shown as applied to a. glass blowing machine of the. Graham t e which conipris inverted blank molds mounted on a rotating carriage and brought successively into position to receive a charge of glass. The charge is introduced through the open upper end of head or plate mold to close the inverted mold. A. closing 18 then brought down onto the the same. A r under pressure is introduced at the. lower end of the mold to erpand'the glass aga nst the walls of the mold and said closingchead.

The invention comprises an improved with mucli with the form greater ease andrcertainty than of mold heretofore in use.

The daring or widening of the mouth of the mold cavity also facilitates the introduction of the gob of glass.

This'is of particular advantage in connection with machines of the continuously rotating type in which the charge must be dropped into the mold during the brief interval of time the mold is passing the charging station, unless special means are provided for guiding the charge into the mold.

A further advantage obtained by the present invention is that the size or capacity of the mold may be readily varied by changing the closing heads, which for this purpose may be provided with cores which will enter the molds toa greater or less distance.

In this manner the blank molds are adapted for making bottles or other ware of any size and capacity within the limits for which they are designed. This is of practicalimportance as it eliminates the necessity of changing the blank molds when it is desired to make a diliercnt sized article on ,the machine, and also greatly reduces the number of molds required when the machine is used to make articles of different sizes or weights.

A further object of the invention is to provide means for reducing the capacity of/ the mold cavity'to approximately that of the charge of glass therein so that when the blank is blown by applying air pressure at the opposite end thereof. the cavity blown in the blank is comparatively small. This overcomes an objection experienced in the operation of machines of this type in which the blowing of the blank in the blank mold hasresulted in forming a parison in which the blown cavity is of considerable size extending a greater portion of the. length of the parison. When such hollow parison is blown in the finishing mold there is an 1111 even distribution of the glass, resulting in a 30 wavy appearance in the walls of the finished article. This objection is overcome by the use of the present invention,

The invention further comprises anovel method of supporting the blank mold closing head, permit-ting the latter to be quickly removed and replaced by one of a different size, without interrupting the operation of the machine.

Other features and advantages will appear 99 hereinafter. I i

The present application discloses certain subject matter also disclosed in my copendinc; application Serial Number 712,140, filed May 9. 1924-.

In the accompanying drawings:

Figure 1 is a sectional elevation of a machine vof the Graham type towhich my invention is'applied, some parts of the machine being broken away and others shown dia- 109 grammatically.

Figure 2 is a bottom plan view of the mold closing plate and its supporting head.v

Figure 3 is an elevation of the supporting head. A 105 Figure 4:: is a detail showing the position of the locking detent while the closure plate is partially withdrawn from the head.

Figu e a pm'psaclioil lal view'of the glass the'reinzuul- {he clmm e plato b'fiore 1 has been lowm'ml onto tllo'n'mld.v

in 211016", [Figure 8 is a, mold and lflDSQZ'C Plato with a. oompm'zh tively short oxtensioo. 01' core Whorobyiho capaclty oi the mold figs mcre'asedI tatable about arlcepnfmil s't-lt-ionary' colmr'ni 11. Molmted-on the car-i'iage are PEUFlSOli" nlolds 1:2, neck molds 13311111 finishingfmolds 14;. As ,the emu-loge rotates; the Pa-1 molds arc-I lax-might suc-cssivol-y toohn lingo-position, atwl hich a charge v )f-',, lflus1s is dropperl into the open np'p'ol' 'cncliof t mom. blowing j head -.(2;0l3 llown) ,3:

211611 naovo ownwaiwl onto the mold and,

mi antler pi'asg' uio is admitted through sai hood. to ompaet file glass in the fpmso' mold and ais'a'forn'l' the neck-of the bottle in the neck mold. The blowing head is than sure Y-filltdill is brought ilown on the 11101:

12 and girls than blown .through ihe neck of the article to expand the pamson 15 against the mold Walls and Slilfl ololiltc plate Tho pm'lson-molcl tlxon'opcns, leming ,i-ho bare pmrison projecting upw-nlul of :Elie pm'i'son molil:12 't he xppla walls, 215' oi the mold cavlty bel ng correspondingly mold bavity. lihe lower surface 24-01? the plug may be shaped as shown to form'- amasl (l the closure plate in position .there F'gum 6 shows u'mold willl a charge, of

l a similar vie'a'v withthe plate lowered into position and the pmfismn blown .Jsidewise, vp er 'nitti ng' another plat-e to be slipped nto position without interrupting affagmentm'yView showing,

or misorfemng -Wll3ll dle OPQI'zLl-IOD' of the mold opens 'cel'a iber, 1920.

and

pi to 1.5 s cl ateml (lei-em, mfi lifted toreleaso the alate 21' k LUV. by means of .1 finger plece QIyagzunSt the tension of a spr'ing 28, It-wy-ill be seezi that "with this c' 0'nstruct i0n th e olosure 7 plate" may "b quiokly "removed by simplyv raising the fiiager. piece '27 and slipping tho-plate out izaclidito. the lowo and of afod 29am:-

looked E3100 f "sition liy-a spring (latent 526.. Thdlocklng mean of a. holding plate 30 connected to shown; is $116 pistonrod of an air motor bywhichfihe mold blosure 21 isflifted ancllowermi. v l. By referende to-Figure 6, it will beseen that j-the charge of glass 15 'doe notf the old-,3 butle'aves sufilcientf space ftof accom+ 0&34to-the-plug 532 and a small additional $1 Spm- After'said plug. has been lowered law-close the mold, the neck mold plunger 34: withdrawn; leavingfan initial blow pee in the neck of the blank, oti'which' "pgl 'son blown to 'theform shown In: lgixie-gl', wherein the glass completely fills Gatling aib under pressure is' 'app'lie(l and substituted, thereby incl-easing I the capacity 7 oftlm mold asshown in Figui e 8. l'sglodifioations may be resorted to Within the spirit and soope of my inyention; I

Hayvmg nowdescribed my mventlon, what I claim as now and desire to secureby Let-1 I ZQljS Patent ofwfihe Unit-ed States,=.is

v In & forming machine, thoconibinu- (ion of a mold open at one end to receive ltscharge a closure for the mold, a" head carx ing said closure, a (lot'onc by which said closure is locked. tothe head, and means to Withdraw said detent, said closure being thereby reloasedand free for instantaneous removal from the head.

"AL ERTN. CRAMER.

Signed at Toledo, int-ho county of Lucas 

